Des Plaines (IL) monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Des Plaines

Des Plaines average temperature chart (Celsius) Des Plaines average temperature chart (Fahrenheit)
Average monthly temperatures in Des Plaines (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -2 0.7 7.2 14.2 20.8 26.2 28.3 27.2 23.3 16.9 8.8 1.1
°F 28.5 33.2 44.9 57.5 69.4 79.1 82.9 81 73.9 62.4 47.8 34.1

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Des Plaines monthly rainfall chart (mm) Des Plaines monthly rainfall chart (inches)
Average monthly rainfall in Des Plaines (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 45 37 71 101 86 98 104 93 88 64 69 66
inches 1.8 1.5 2.8 4 3.4 3.9 4.1 3.6 3.5 2.5 2.7 2.6
Rainy days 11 9 12 13 11 10 10 9 10 9 11 12

Average annual rainfall in Des Plaines: 874.666mm (344.4 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Des Plaines

Des Plaines average daily sunshine chart
Average daily sunshine Des Plaines
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.9 5.4 6.5 7.7 9.7 11.1 11 9.8 8.1 6.7 4.2 3.8

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Des Plaines average minimum / maximum temperatures (Celsius) Des Plaines average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Des Plaines (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -10.9 -8.3 -2.2 3.4 8.8 14.2 17.3 16.5 12.3 5.9 -0.2 -7.2
Max °C -1.8 0.9 7.4 14.5 21.1 26.5 28.6 27.5 23.6 17.2 9 1.4
Min °F 12.5 17.1 28 38 47.8 57.5 63.1 61.7 54.1 42.5 31.6 19.1
Max °F 20.7 25.3 36.7 48 58.8 68.5 73.2 71.6 64.2 52.7 39.9 26.8

Sea temperature

The graph below shows the average sea temperature.

Des Plaines average sea temperature chart (Celsius) Des Plaines average sea temperature chart (Fahrenheit)
Average sea temperature around Des Plaines in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 3.6 2.8 2.7 3.6 6 12.1 19.3 21.8 19.6 14 8.9 5.3
°F 38.6 37.1 36.8 38.4 42.8 53.8 66.8 71.3 67.3 57.2 48 41.6

Wind speed

The graph below shows the average wind speed.

Des Plaines average winspeed by month (km/h) Des Plaines average winspeed by month (mph)
Average wind speed in Des Plaines (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 20 19 21 21 18 16 14 14 16 17 19 19
mph 12 12 13 13 11 10 9 9 10 11 12 12

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Des Plaines relative humidity averages
Average relative humidity in Des Plaines
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
73% 72% 70% 66% 65% 67% 70% 72% 72% 70% 74% 76%

Other monthly averages

UV index Best time to go?

Des Plaines weather stats

Des Plaines weather statistics
Hottest month: July 28.3°C 82.9°F
Driest month: February 37mm 1.5ins
Sunniest month: July 11hrs
Coldest month: January -2°C 28.4°F
Wettest month: July 104mm 4.1ins
Warmest sea: August 21.8°C 71.2°F
Map showing location of Des Plaines (42.03336, -87.8834) Des Plaines map pin © Google

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